A washing machine agitator for circulating and purifying laundry water

Abstract

The present invention belongs to the technical field of washing machine agitators, and particularly relates to a washing machine agitator for circulating and purifying washing water, which comprises an upper agitator housing and a lower agitator housing. An inlet is provided in the middle of the upper agitator housing, and a plurality of stirring ridges are annularly arranged on the outer periphery. Water outlets with filter meshes are provided on the stirring ridges; an installation protrusion is provided in the middle of the front surface of the lower agitator housing, and a spline sleeve is provided in the middle of the installation protrusion. A plurality of water deflecting partitions are annularly arranged on the outer periphery of the lower agitator housing. The upper agitator housing is coaxially buckled above the lower agitator housing, and water passing channels are provided between the water deflecting partitions. A sewage outlet is provided between the outer edges of the upper and lower agitator housings. The installation protrusion protrudes through the middle of the inlet. A check valve disc that can float up and down is sleeved on the outside of the installation protrusion. When the check valve disc descends, the inlet is communicated with the sewage outlet, and when it rises, it reversely blocks the inlet to prevent backflow. While ensuring the functions of circulating filtration and purification of washing water and self-cleaning of dirt, the agitator structure is simpler and the operation is more stable.

Description

Technical Field

[0001] The present invention belongs to the technical field of washing machine agitators, and particularly relates to a washing machine agitator for circulating and purifying washing water. Background Art

[0002] Washing machines are important household appliances in people's lives. With the continuous development of washing machine technology, fully automatic washing machines have entered thousands of households. Fully automatic washing machines are mainly divided into two types: agitator washing machines and drum washing machines. Among them, dirt such as lint remaining in the washing water of agitator washing machines is filtered and remains in the filter box, which is prone to breeding bacteria and affecting the safety of clothes and human health. To solve this problem, R & D personnel have designed self-cleaning filter agitators. However, the existing self-cleaning filter agitators still need to be further improved. For example, in the washing machine agitator structure disclosed in the patent document CN218059573U, the water inlet is directly connected to the filtered water outlet hole, and there will be a situation where the washing water flows back from the outlet hole to the inlet hole, resulting in part of the filtered dirt returning to the washing tub from the inlet hole, reducing the circulating filtration and purification effect of the washing water. Another example is the washing machine agitator structure disclosed in the patent document CN218263139U, where check valve plates are added between the filter holes and the sewage outlet and the water inlet, avoiding the problem of washing water flowing back from the filter holes and the sewage outlet to the water inlet. However, the number of check valve plates is four, and their structural settings and installation methods are still somewhat complex. The installation rotating shaft of the check valve plate is prone to breakage and damage, increasing the failure rate and maintenance cost of the washing machine agitator, and affecting the user experience of consumers and the product reputation of the washing machine. Summary of the Invention

[0003] In view of the above situation, the present invention designs a washing machine agitator for circulating and purifying washing water. By adopting the method of setting a check valve piece at the water inlet of the agitator, while ensuring the circulating filtration and purification effect of the washing water, the agitator structure is made simpler, and the agitator runs more stably and reliably.

[0004] To achieve the above objectives, the present invention adopts the following technical solutions:

[0005] A washing machine agitator for circulating and purifying washing water includes an upper agitator housing and a lower agitator housing. A water inlet is coaxially opened in the middle of the upper agitator housing, and a plurality of stirring ridges are annularly arranged around the water inlet. Water outlet holes are opened on each stirring ridge, and filter meshes are cooperatively arranged on the water outlet holes.

[0006] A dome-shaped mounting protrusion is coaxially fixed in the middle of the front side of the impeller lower shell, a impeller mounting groove is coaxially arranged in the middle of the mounting protrusion, a plurality of water-repelling baffles are annularly arranged on the outer periphery of the mounting protrusion, the impeller upper shell and the impeller lower shell are both disc-shaped, and the diameter of the impeller lower shell is smaller than the diameter of the impeller upper shell, the impeller upper shell is coaxially buckled on top of the impeller lower shell, water passages are left between the water-repelling baffles, and a sewage outlet is left between the outer edge of the impeller lower shell and the outer edge of the impeller upper shell.

[0007] After the impeller upper shell and the impeller lower shell are assembled and snapped together, the upper end of the mounting protrusion protrudes through the middle of the water inlet, and a circular check valve plate is sleeved on the outside of the mounting protrusion, and the outer diameter of the check valve plate is larger than the diameter of the water inlet. The check valve plate can float up and down along the mounting protrusion. When the check valve plate is lowered, the water inlet is connected with each water passage and the sewage outlet. When the check valve plate is raised, the water inlet is reversely blocked.

[0008] Furthermore, a spline sleeve for connecting the impeller driving shaft is provided in the impeller mounting groove. The spline sleeve and the impeller driving shaft are detachably connected by assembling screws. The spline sleeve is fixed in the impeller mounting groove, and an internal thread is coaxially provided at the center of the impeller driving shaft.

[0009] Furthermore, a plurality of countersunk screw holes are provided on the impeller lower shell, and a plurality of fixing screw columns are correspondingly fixed on the impeller upper shell, and the impeller upper shell and the impeller lower shell are fixedly connected by assembling screws.

[0010] Preferably, the check valve is an annular thin sheet made of rubber, plastic or rubber-plastic material with a specific gravity smaller than that of water, with a simple structure, easy to manufacture, certain elasticity and good sealing performance, and a one-way water-conducting function of forward conduction and reverse cutoff. An elastic component such as a spring with a certain elastic force can also be arranged under the check valve to assist the check valve to lift upward, but it should be noted that the elastic force should not be too large to completely prevent the check valve from opening normally downward when water enters the impeller.

[0011] Furthermore, the impeller upper shell is provided with 3 to 6 stirring ridges, preferably 4, the lower side of each stirring ridge corresponds to a process groove, and a partition baffle integrally formed with the impeller upper shell is radially arranged in the middle of each process groove to divide the internal space of the process groove into two.

[0012] Furthermore, each of the water-repellent baffles is a straight strip blade that is integrally formed with the impeller lower shell and is perpendicular to the front side of the impeller lower shell.

[0013] The present invention also includes other components that enable it to be used normally, all of which are conventional means in the field. In addition, devices or components not limited in the present invention, such as the washing machine and its impeller drive shaft, spline sleeve, etc., all adopt the existing technology in the field.

[0014] The beneficial effects of the present invention are as follows:

[0015] The washing machine agitator provided by the present invention belongs to a washing machine agitator with the functions of laundry water circulation purification and dirt self-cleaning. On the premise of ensuring the effect of circulating filtration and purification of the laundry water, a check valve piece is arranged at the water inlet of the agitator. This setting method can effectively solve the problem that the dirt returns to the laundry water due to the backflow of the laundry water. In addition, the check valve piece and the agitator structure are simpler, the operation is more stable and reliable, and the failure rate of the agitator is reduced. Moreover, the opening degree of the sewage outlet of the agitator is larger, the sewage discharge is smoother, which is beneficial to improving the efficiency of circulating filtration and purification of the laundry water. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front structural schematic diagram of the upper shell of the agitator in the embodiment.

[0017] Figure 2 It is Figure 1 a back structural schematic diagram of the upper shell of the agitator in

[0018] Figure 3 a front structural schematic diagram of the lower shell of the agitator in the embodiment.

[0019] Figure 4 It is Figure 3 a back structural schematic diagram of the lower shell of the agitator in

[0020] Figure 5 It is Figure 3 a sectional structural schematic diagram along line A-A.

[0021] Figure 6 a front structural schematic diagram of the agitator composed of the upper and lower shells of the agitator in the embodiment.

[0022] Figure 7 It is Figure 6 a back structural schematic diagram of the agitator in

[0023] Figure 8 It is Figure 6 a sectional structural schematic diagram along line B-B in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] Next, the technical solutions of the present invention will be clearly and completely described in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all embodiments.

[0025] Embodiment

[0026] A washing machine agitator for circulating and purifying laundry water includes an upper agitator shell 1 and a lower agitator shell 2, as Figures 1 - 2As shown in the figure, a water inlet 3 is coaxially provided in the middle of the upper shell of the agitator wheel. Four stirring ridges 4 are arranged in a cross shape on the upper shell of the agitator wheel. The lower side of each stirring ridge corresponds to a process groove. A partition baffle 5 integrally formed with the upper shell of the agitator wheel is radially arranged in the middle of each process groove. A water outlet is provided on the stirring ridge, and a filter screen 6 is arranged in cooperation with the water outlet.

[0027] As Figures 3 - 5 shown in the figure, a mound-shaped mounting protrusion 7 is coaxially and fixedly provided in the middle of the front surface of the lower shell of the agitator wheel. A agitator wheel mounting groove is coaxially arranged in the middle of the mounting protrusion. A plurality of water deflecting partition plates 8 are annularly arranged on the outer periphery of the mounting protrusion. Both the upper shell and the lower shell of the agitator wheel are disc-shaped, and the diameter of the lower shell of the agitator wheel is smaller than that of the upper shell of the agitator wheel. The upper shell of the agitator wheel is coaxially buckled above the lower shell of the agitator wheel. A water passage 9 is provided between each water deflecting partition plate. An annular sewage outlet 10 is provided between the outer edge of the lower shell of the agitator wheel and the outer edge of the upper shell of the agitator wheel. The water deflecting partition plate is a linear strip-shaped blade integrally formed with the lower shell of the agitator wheel and perpendicular to the front surface of the lower shell of the agitator wheel.

[0028] As Figures 6 - 8 shown in the figure, after the upper shell and the lower shell of the agitator wheel are assembled and buckled, the upper end of the mounting protrusion protrudes through the middle of the water inlet. An annular check valve piece 12 is sleeved outside the mounting protrusion, and the outer diameter of the check valve piece is larger than the diameter of the water inlet. The check valve piece can float up and down along the mounting protrusion. When the check valve piece descends, the water inlet is communicated with each water passage and the sewage outlet. When the check valve piece rises, it reversely blocks the water inlet.

[0029] A spline sleeve 13 for connecting the agitator wheel drive shaft is arranged in the agitator wheel mounting groove in cooperation. The spline sleeve and the agitator wheel drive shaft are detachably connected by an assembly screw 14. The spline sleeve is fixedly arranged in the agitator wheel mounting groove. An internal thread is coaxially arranged in the center of the agitator wheel drive shaft. After the assembly screw is screwed into the internal thread, the spline sleeve and the lower shell of the agitator wheel are fixedly connected to the agitator wheel drive shaft. The agitator wheel drive shaft and the spline sleeve are common settings in agitator washing machines and belong to the prior art, so they will not be elaborated here.

[0030] A plurality of countersunk screw holes 15 are provided on the lower shell of the agitator wheel. A plurality of fixed screw posts 16 are correspondingly and fixedly provided on the upper shell of the agitator wheel. The upper shell and the lower shell of the agitator wheel are fixedly connected by an assembly screw 11. After the upper and lower shells of the agitator wheel are combined into a complete agitator wheel shell, each assembly screw is completely embedded in the countersunk screw hole to ensure that the back surface of the lower shell of the agitator wheel is relatively flat.

[0031] The check valve piece is an annular thin sheet made of rubber, plastic or rubber-plastic material, and its specific gravity is slightly smaller than that of water. When there is water in the washing tub of the washing machine, the check valve piece can float on the water and can float up and down with the up and down flow of the water. The check valve piece has a certain elasticity and good sealing performance, and can effectively block the water inlet when the washing water flows back reversely.

[0032] When the washing machine is working, the agitator will rotate forward and backward intermittently. When the agitator rotates forward or backward, under the centrifugal force of the agitator rotation, the washing water in the agitator housing is thrown outwards to the periphery, and a certain negative pressure environment will be formed inside the agitator. The washing water above the water inlet of the agitator is sucked into the agitator. At this time, the check valve flap is opened downward due to the impact of the incoming water to ensure the forward water flow through the water inlet of the agitator; when the agitator stops rotating, due to inertia, the washing water will have a reverse impact backflow trend. At this time, the check valve flap is pushed up by the backflow washing water to block the water inlet, achieving the effect of blocking the backflow of the washing water, and further realizing the one-way water guiding function of the check valve flap for forward conduction and reverse cut-off.

[0033] The technical solution of the present invention is not limited to the limitations of the above specific embodiments. Without departing from the scope and spirit of the described embodiments, many modifications and changes are obvious to those of ordinary skill in the art. Any technical deformation made within the spirit and principle of the present invention falls within the protection scope of the present invention.

Claims

1. A washing machine agitator for circulating and purifying washing water, comprising an agitator upper housing and an agitator lower housing, characterized in that: A water inlet is coaxially provided in the middle of the upper housing of the agitator wheel. A plurality of stirring ridges are annularly arranged on the outer periphery of the water inlet. Water outlet holes are provided on each stirring ridge, and filter meshes are cooperatively arranged on the water outlet holes. A domed mounting protrusion is coaxially fixed in the middle of the front surface of the lower housing of the agitator wheel. A agitator wheel mounting groove is coaxially arranged in the middle of the mounting protrusion. A plurality of water deflecting partitions are annularly arranged on the outer periphery of the mounting protrusion. Both the upper housing of the agitator wheel and the lower housing of the agitator wheel are disc-shaped, and the diameter of the lower housing of the agitator wheel is smaller than that of the upper housing of the agitator wheel. The upper housing of the agitator wheel is coaxially buckled above the lower housing of the agitator wheel. Water passing channels are left between the water deflecting partitions. A sewage outlet is left between the outer edge of the lower housing of the agitator wheel and the outer edge of the upper housing of the agitator wheel. The upper end of the mounting protrusion protrudes through the middle of the water inlet. An annular check valve disc is sleeved outside the mounting protrusion, and the outer diameter of the check valve disc is larger than the diameter of the water inlet. The check valve disc can float up and down along the mounting protrusion. When the check valve disc descends, the water inlet is communicated with each water passing channel and the sewage outlet. When the check valve disc rises, the water inlet is reversely blocked. A spline sleeve for connecting the agitator wheel drive shaft is cooperatively arranged in the agitator wheel mounting groove. The check valve disc is an annular thin sheet made of rubber, plastic or rubber-plastic material with a specific gravity smaller than that of water. Each of the water deflecting partitions is a linear strip-shaped blade integrally formed with the lower housing of the agitator wheel and perpendicular to the front surface of the lower housing of the agitator wheel.

2. The agitator of a washing machine for cyclically purifying laundry water according to claim 1, characterized in that: The spline sleeve and the agitator wheel drive shaft are detachably connected by assembly screws.

3. The impeller of a washing machine for cyclically purifying washing water according to claim 1, characterized in that: A plurality of countersunk screw holes are provided on the lower housing of the agitator wheel. A plurality of fixing screw posts are correspondingly fixed on the upper housing of the agitator wheel. The upper housing of the agitator wheel and the lower housing of the agitator wheel are fixedly connected by assembly screws.

4. The impeller of a washing machine for cyclically purifying laundry water according to claim 1, characterized in that: 3 to 6 stirring ridges are provided on the upper housing of the agitator wheel. Process grooves correspond to the lower sides of the stirring ridges. Partition baffles integrally formed with the upper housing of the agitator wheel are radially arranged in the middle of the process grooves.

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